Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Deutsche Bahn introduces "MetaWindow"

railtarget.eu

Post reply on HN
Print view View original

351–360 of 474 posts

Re: Deutsche Bahn introduces "MetaWindow"

#351

Post by close04 »

tichiian wrote: post #336
broken-kebab wrote: post #322

Earlier quoted context omitted.

If it should belong to everyone as you claim, then every aspiring graffiti maker must ask everyone's opinion before starting spraying.

Basically, in my ideal world, whoever builds an ugly enough building should be liable to remove it or improve it if it is deemed too ugly by a majority. Graffiti is (partially) just the consequence of not living in that ideal world, but because of all the other problems with graffiti, I'd rather just treat it as the vandalism it usually is in all cases. No sense holding an election before every prosecution or clean a…

People wouldn't need to outright show they're bigots, they can just vote your house too ugly to be on their street...

Re: Deutsche Bahn introduces "MetaWindow"

#352

Post by lukan »

patates wrote: post #340
lukan wrote: post #295

Earlier quoted context omitted.

I live outside the city, so I know the difference in sound at high speed when they pass by. It makes a great difference. Combustion vs electric but also the manufacturing and damping of the wheels etc. Steelwheel on steel can be very silent.

huh. rubber on asphalt is very loud on high speeds, could steel on steel really be quieter? (for downvoters: this is a real question, I'm not trying to suggest it can't be)

Yes, because rubber and asphalt do not really have a smooth surface unlike polished steel. So all the little bumbs give your car grip, but also cause friction, which is noise.

One of the reasons, why trains are better suited in theory for long distance transport, than trucks. Little friction, so more energy efficient.

Re: Deutsche Bahn introduces "MetaWindow"

#353

Post by axytol »

kierenj wrote: post #275
riffraff wrote: post #118

Earlier quoted context omitted.

That's a really cool demo!

Weirdly it says "up to 10dB" attenuation.. which isn't actually that much at all. 10dB would be a halving/doubling. I'm not sure how the apparent loudness / change in waveform amplitude display is so great, considering that actual hard stat...

3 dB would be halving/doubling. With 10 dB, you would get a ratio of 10x.

Re: Deutsche Bahn introduces "MetaWindow"

#354

Post by smokel »

JR1427 wrote: post #320
smokel wrote: post #310

Earlier quoted context omitted.

The idea is to install only a few of these, possibly only in designated railway carriages. It would make for a great conversation starter, which might be an improvement over people staring at their own screens.

Ah, I see. I thought the idea might be to replace windows completely, like on the fridge doors of some supermarkets.

Also, the envisioned displays are transparent, as in science fiction movies.

Edit: partially transparent, obviously.

Re: Deutsche Bahn introduces "MetaWindow"

#355

Post by Hugsun »

jhhh wrote: post #82
Hugsun wrote: post #19

Earlier quoted context omitted.

Implying that graffiti is as bad as bank robberies is wild.

The point of the post was that merely having a subculture attached to something doesn't make it good or bad. The addition of the bank robbing was to make that point obvious by attaching a subculture to something obviously bad. If you thought they were saying that graffiti is bad because it's like bank robbery (which is bad) then you misunderstood the point of the post.

Two of my replies just said that graffiti was worse than bank robberies. That's hilarious and crazy to me.

I get your point though, on reading the comment I replied to, after reading yours, it's clear to me that the equivalence implication is fairly weak. Your interpretation seems more accurate.

Re: Deutsche Bahn introduces "MetaWindow"

#356

Post by adrianN »

lukan wrote: post #278
earthnail wrote: post #185

I love this. I read so much criticism here, but noise pollution is a main issue when it comes to railroads in residential zones. Yes, punctuality is an issue with Deutsche Bahn. No, this doesn’t fix that instantly. But as an organisation you can work on two things at the same time. This invention is spectacular. I wish more people would work on noise pollution. It makes a huge difference.

Noise reduction with trains is probably best done with improving the trains. I live next to a frequent trainline, so I can say: There are modern long electric passenger trains, that barely make a noise at all. And then there are old freight trains, that can be heard from miles away. Since I doubt this noise barrier will be placed everywhere except at some very special key areas, I rather want the Bahn to focus on bet…

Rolling stock lives for many decades and replacing it early is cost prohibitive. So I don’t think changing something about the trains is the best option for reducing noise.

Re: Deutsche Bahn introduces "MetaWindow"

#357

Post by Hugsun »

cm2187 wrote: post #173
Hugsun wrote: post #19

Earlier quoted context omitted.

Implying that graffiti is as bad as bank robberies is wild.

I am not sure I agree. You are making the life a little worse to hundred of thousands of people by making them feel like they live in a trash city every day. I am for tough penalties on the authors of grafitis. At least make them pay the full cost of cleaning them up plus heavy fines.

I was thinking about this in the context of the graffiti subculture around the German rail system. It's pretty interesting and different from random tagging.

I somewhat agree with you if we are talking about low effort tagging, especially on homes.

However if I had to choose between some ambitious criminals being given a large amount of money or if some wall getting a bad piece of art on it, I would always choose the latter.

Re: Deutsche Bahn introduces "MetaWindow"

#358

Post by mavhc »

usrusr wrote: post #296
mavhc wrote: post #281

Earlier quoted context omitted.

What if I apply a protective coating to an unprotected wall, using my own money to supply the materials?

Same as adjusting other people's tire pressure: perfectly fine if you have explicit approval.

Definitely not violence though?

Re: Deutsche Bahn introduces "MetaWindow"

#360

Post by infecto »

lukan wrote: post #278
earthnail wrote: post #185

I love this. I read so much criticism here, but noise pollution is a main issue when it comes to railroads in residential zones. Yes, punctuality is an issue with Deutsche Bahn. No, this doesn’t fix that instantly. But as an organisation you can work on two things at the same time. This invention is spectacular. I wish more people would work on noise pollution. It makes a huge difference.

Noise reduction with trains is probably best done with improving the trains. I live next to a frequent trainline, so I can say: There are modern long electric passenger trains, that barely make a noise at all. And then there are old freight trains, that can be heard from miles away. Since I doubt this noise barrier will be placed everywhere except at some very special key areas, I rather want the Bahn to focus on bet…

What evidence other than your anecdotal evidence that a lightweight passenger train creates less noises then a heavy load freight? I am sure there are some differences in regards to design and age but wouldn't you imagine the majority of the difference is in weight? Passenger trains weigh nothing.
Post reply on HN